Black screen when turning on laptop, CPU fan not spinning

What to do when the computer cannot be turned on, the power light does not light up, and the CPU fan does not spin

Find professional maintenance personnel to repair the motherboard. If it cannot be turned on, then use the minimal system method, unplug the data cables of the hard disk and CD-ROM drive, and then check whether the computer can be turned on. If a startup screen appears on the computer monitor, it means that the problem is in these devices.

power cable . Check whether the power cord is plugged in properly, whether the power strip is connected, and whether the power cord is damaged. You can try a different one. Generally, the power cord on the rice cooker will suffice. 02 Check whether the chassis power-on key wire is loose.

The computer cannot be turned on and the power supply fan is not spinning. Possible reasons include: excessive dust, damage to the power supply fan, dust accumulation on the graphics card fan, etc. If the computer still cannot be turned on after cleaning and inspection, it is recommended to send it for repair.

It is also possible that a component in the power supply load is short-circuited, causing the power supply itself to be protected. The troubleshooting method can be to use the replacement method to find out the short-circuited components to solve the problem. If it's not a peripheral component, it may be a problem with the motherboard itself.

The computer cannot be turned on and the power supply fan is not spinning. You can check whether the fan is too dirty and cannot be started. If so, you can clean the fan. If not, you can send it to repair in time.

This situation is an inability to start caused by various faults. If it is determined that the power supply is good, then the motherboard and CPU should be suspected to be damaged. If the motherboard is damaged or the CPU is damaged, the CPU fault needs to be eliminated first. You can replace the motherboard CPU with a good CPU and see if it can start. to rule out damage to other equipment.

What should I do if my Win10 laptop has a black screen when it starts up and the fan does not spin?

Computer memory is one of the most common reasons for a black screen when the computer starts up. Generally, we can consider trying to replace the memory with new ones, or try to replace the memory. After removing it from the motherboard, use a clean cloth to wipe the golden finger part of the memory module, then try to reinstall it, restart the computer and check whether the black screen problem can be solved.

Try changing the power supply to rule out the second possibility; please check the motherboard for abnormalities, such as whether there are capacitor bulges (breakdowns), whether there is obvious damage to the motherboard surface that leads to blocked circuits, etc. You can get Check it at a service station and if possible, replace the motherboard to confirm.

i. Check whether the CPU is overclocked, whether the contact between the CPU and the motherboard is good, and whether the CPU cooling fan is intact. If overclocking causes a black screen, just jump the CPU back to its original frequency. If the contact is poor, remove the CPU and reinstall it, and use a high-quality, high-power fan to dissipate heat to the CPU. j. Check parameter settings.

If the monitor and graphics card are installed securely, please try another monitor that is confirmed to be normal. If the screen is no longer black, then the cause is that the monitor may be damaged. Confirm whether there is a problem with the fan. If the monitor is not damaged, please further check whether the CPU fan is running.

Is there any fan sound when pressing the power button? If there is no sound, it is basically a hardware problem. If there is sound the system cannot start. You can use the original system disk to restore it.

Why is the computer turned on but the display is black and the motherboard fan is not spinning?

1. There are many reasons for a black screen on the computer, such as damage to the monitor, damage to the motherboard, damage to the graphics card, or contact with the graphics card. Defective, damaged power supply, damaged CPU, etc. To deal with computer black screens, we basically use a combination of elimination and replacement. The principle should be to replace and eliminate the most suspicious components first.

2. Open the monitor and see that the signal line from the host needs to be soldered on the monitor motherboard. Re-soldering is normal. Same as above. The output of the monitor switching power supply is lower than the normal value. Check that the power switch IC is broken. Twenty-five tips to prevent computer crashes. Installing too many operating systems on the same hard drive will cause the system to crash.

3. Of course, it may also be because the interface between the monitor and the host cable is in poor contact. At this time, you can remove the interface from the back of the monitor to the host case and clean it, then connect it again and try again.

4. The computer is running normally but the screen is black. 3. The computer monitor suddenly has a black screen but the host is still working normally. Check whether the connection cable between the monitor and the host is loose. If it doesn't work, the fault may be caused by poor hardware contact.

5. Poor contact of the graphics card will cause a black screen problem. It is recommended to check. Monitor wiring errors are common. This is usually because the host computer is equipped with a separate graphics card, and when the user connects the video to the monitor, he plugs it into the display interface on the motherboard. This is where the connection error occurs, resulting in a black screen on the monitor when the computer is turned on. signal input.

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